If p is a prime number, for how many values of p is p^2 + 21p - 1 also prime?

What is 258/300 is a decimal

How do you write 905,203 in expanded form

What's the answer for this question x4 + 6x2 + 5 = 0

Which of the following correctly demonstrates the distributive property? A. 41a + 3bc + 2d) = 4a + 12b4c + 8 (40) B. 4 (a + 3bc+2d) = 4a + 12bc + 8d C. 4 (a + 3bc + 22) = (4+1) a + (4+36) (4+1) c + (4+2) d D. none of the above

If i'm getting 20% commission from a monthly sale of $800000 what is my 30% in month of sale be?

The sears tower in Chicago is 1450 feet tall. A model of the tower is 24 inches tall. What is the ratio of the height of the model to the height of the tower?

Given the following linear functions, determine their relationship: f (x) = x+4 and 8 (x) = 4-4 Parallel Perpendicular Neither

Find 9% of 270 in simplest form

A building is at least 75 stories tall. Write the inequality that illustrates this.

What is the product of 3 2/3 and 14 2/5